2181391900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{6011}}^1$

素因数の和:6235

約数の個数: 72

約数和(自身を含む): 5009679360

約数和(自身を除く): 2828287460

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 191, 380, 382, 475, 764, 950, 955, 1900, 1910, 3629, 3820, 4775, 6011, 7258, 9550, 12022, 14516, 18145, 19100, 24044, 30055, 36290, 60110, 72580, 90725, 114209, 120220, 150275, 181450, 228418, 300550, 362900, 456836, 571045, 601100, 1142090, 1148101, 2284180, 2296202, 2855225, 4592404, 5710450, 5740505, 11420900, 11481010, 21813919, 22962020, 28702525, 43627838, 57405050, 87255676, 109069595, 114810100, 218139190, 436278380, 545347975, 1090695950, 2181391900]

約数ペア:

[(1, 2181391900), (2, 1090695950), (4, 545347975), (5, 436278380), (10, 218139190), (19, 114810100), (20, 109069595), (25, 87255676), (38, 57405050), (50, 43627838), (76, 28702525), (95, 22962020), (100, 21813919), (190, 11481010), (191, 11420900), (380, 5740505), (382, 5710450), (475, 4592404), (764, 2855225), (950, 2296202), (955, 2284180), (1900, 1148101), (1910, 1142090), (3629, 601100), (3820, 571045), (4775, 456836), (6011, 362900), (7258, 300550), (9550, 228418), (12022, 181450), (14516, 150275), (18145, 120220), (19100, 114209), (24044, 90725), (30055, 72580), (36290, 60110)]